HP Modular Smart Array 500 Starter Kit Uživatelská příručka stáhnout pdf (Strana 60)

60 Alphabetical list of commands

dequarantine vdisk

Description A previously fault-tolerant vdisk becomes quarantined when not all of its disks are detected after a

restart or power cycle, and there are no available spares to start reconstruction. Quarantine isolates

the vdisk from host access, and prevents the storage system from making the vdisk critical and

starting reconstruction when disks are "missing" for these reasons:

• Slow to spin up after system power-up

• Not properly seated in their slots

• In an powered-off enclosure

• Inserted from a different system and contains old metadata

The vdisk can be fully recovered if the missing disks can be restored. Make sure that no disks have

been inadvertently removed and that no cables have been unplugged. Sometimes not all disks in the

vdisk power up. Check that all enclosures have rebooted after a power failure. If these problems are

found and then fixed, the vdisk recovers and no data is lost.

The quarantined vdisk's disks are "write locked" and the vdisk is not available to hosts until the vdisk

is removed from quarantine. The system waits indefinitely for the missing disks. If the disks are found,

the system automatically removes the vdisk from quarantine. If the disks are never found because

they have been removed or have failed, you must manually remove the vdisk from quarantine.

If the missing disks cannot be restored (for example, they failed), you can remove the vdisk from

quarantine to restore operation in some cases. If you remove from quarantine a vdisk that is not

missing too many disks, its status changes to critical. Then, if spares of the appropriate size are

available, reconstruction begins.

NOTE: After you remove the vdisk from quarantine, make sure that a spare disk is available to let

the vdisk reconstruct.

CAUTION: If the vdisk does not have enough disks to continue operation, when the vdisk is

removed from quarantine it goes offline and its data cannot be recovered.

Syntax

dequarantine vdisk vdisk

Parameters vdisk

Name or serial number of the vdisk to remove from quarantine. For syntax, see Command syntax.

Example After determining that vdisk VD1 is quarantined, remove it from quarantine and re-check its status:

# show vdisks

Name ... Stat ...

-----------------

VD1 ... QTDN ... (Quarantined, Down)

-----------------

# dequarantine vdisk VD1

Success: Command completed successfully

# show vdisks

Name ... Stat ...

-----------------

VD1 ... FTDN ... (Fault Tolerant, Down)

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HP Modular Smart Array 500 Starter Kit Uživatelská příručka Strana 60